Sampling device



R. D. DODDS.

SAMPLING DEVICE APPLICATION FILED APR.2, mu.

INVE T R.

[JWW ATTORNEYS.

REDUS n. nonns, or HUMBLE, 'rExAs.

SAMPLING nnvrcn.

Specification of Letters Patent. Patented Oct, 21 1919,

r ApplicationfiledApril 2,1917. Serial 1%. 159,246.

To (152 whom it may concern:

Be it known that I, Rnnus D. Donns, a

' citizen of the United States, residing at Humble, in the county ofHarris and 'State of. Texas, have invented certain new and usefulImprovements in Samplin Devices, of

which the following is a spec' cation. This invention relates to new anduseful improvements in a sampling device.

The object of the invention is to provide a device of the characterdescribed whereby samples of formation may be withdrawn from the bottomof the'bore, during drilling operations.

In the process of boring a well it is often desirable to obtain samplesof formation through which the drill bit is passing and the deviceherein described has been con structedfor the purpose of obtaining suchsamples without interference with, or stopping, drilling operations.

With the above and other objects in view the invention has particularrelation to certain novel features of construction, operation andarrangement of parts, an example of which is given in this specificationand illustrated in the accompanying drawings wherein:

The figure shows a vertical sectional view of the device.

Referring now more particularly to the drawings, the numeral 1 refers toa tubular member, the upper end of which is provided with a bail 2- towhich the suspending cable 3 is attached. Within this member is a valve4 which permits the .fluid to pass upwardly therethrough but closes thesaid member against a downward passage of said fluid. The lower end 5 ofthe tubular member is reduced so as to pass through a central opening inthe drill bit and threaded into the lower end of this reduced portion isthe tool 6.. The lower end of this tool is beveled,

in below said bit, the tool 6 penetrating the formation below said bit,"and said formation being forced up into the hollow. tubular member.Within the tool 6 are a plurality of flexible fingers 8 which projectupwardly and are inwardly inclined. These fingers en age under thesample forced up into the tu ular member and block the lower end of saidmember and secure the sample of formation therein so that the same maybe lifted to :the surface. may be employed for closing the lower end ofthe device which may be foundpractical, the fingers 8 being shown onlyfor thepurpose of illustrating one means of closing the same.

What I claim is: i

A device of the character described including a tubular member having afluid passageway throughout its entire length, and whose lower end 1sreduced, and detachable, a gate 7 tool and whose upper ends are free andcurved inwardly, and a bailby means of which said devicemay besuspended.

Any suitable means I 7 5' I said toolwhose lower ends are secured to theIn testimony whereof I have signed my name to this specification inthe-presence of twosubscribing witnesses.

REDUSDDODDS. Witnessesa 'A. G. Srnmermnn, E. V'.- HABDWAY.

